<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>拉拉</title>
        <style>
            div>p{
                background-color: yellow;
            }
            div span p{
                background-color: green;
            }
        </style>
    </head>
    <body>
        <h1>Welcom</h1>
        <div>
            <h2>name</h2>
            <p>love</p>
        </div>

        <div>
            <span><p>no no no</p></span>
        </div>
        <p>Friends</p>
    </body>
</html>